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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */
// Portions Copyright [2019] Payara Foundation and/or affiliates

package org.glassfish.admin.rest.generator;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Date;
import java.util.logging.Level;
import org.glassfish.admin.rest.RestLogging;

import org.glassfish.hk2.api.ServiceLocator;

/**
 * @author Mitesh Meswani
 */
public class TextResourcesGenerator extends ResourcesGeneratorBase {

    /* The absolute path to dir where resources are generated */
    private File generationDir;

    public TextResourcesGenerator(String outputDir, ServiceLocator habitat) {
        super(habitat);
        generationDir= new File(outputDir);
        if (!generationDir.mkdirs()) {
            throw new RuntimeException("Unable to create output directory: " + outputDir);
        }
    }
    
    @Override
    public ClassWriter getClassWriter(String className, String baseClassName, String resourcePath) {
        ClassWriter writer = null;
        try {
            writer = new TextClassWriter( habitat ,generationDir, className, baseClassName, resourcePath);
        } catch (IOException e) {
            // Log the root cause. The generation is going to fail with NPE.
            RestLogging.restLogger.log(Level.SEVERE, e.getMessage());
            throw new GeneratorException(e);
        }
        return writer;
    }

    @Override
    public String endGeneration() {
        //generate date info in 1 single file
        File file = new File(generationDir+ "/codegeneration.properties");
        try {
            if (file.createNewFile()) {
                try (BufferedWriter out = new BufferedWriter(new FileWriter(file))) {
                    out.write("generation_date=" + new Date() + "\n");
                }
            } else {
                RestLogging.restLogger.log(Level.SEVERE, RestLogging.FILE_CREATION_FAILED, "codegeneration.properties");
            }
        } catch (Exception e) {
            RestLogging.restLogger.log(Level.SEVERE, null, e);
        }

        return  "Code Generation done at : " + generationDir;
    }

    @Override
    protected boolean alreadyGenerated(String className) {
        return false; // Always generate. It just overwrites the file.
    }
}